- unitdate
-
{"value"=>"1973 May", "type"=>"inclusive", "normal"=>"1973-05"}
{"value"=>"n.d", "type"=>"inclusive"}
- physdesc
-
{"value"=>"Charts and graphs", "format"=>"simple"}
- container
-
{"type"=>"box", "value"=>"14"}
{"type"=>"folder", "value"=>"9"}
- date_inclusive_start
-
1973
- date_inclusive_end
-
1973
- keydate
-
1973-05
- unitid
-
{"type"=>"local_mss", "value"=>"513015"}
- date_start
-
1973-05
- date_end
-
1973-05